55435450240 has 128 divisors (see below), whose sum is σ = 135470361600. Its totient is φ = 21686765568.

The previous prime is 55435450201. The next prime is 55435450267. The reversal of 55435450240 is 4205453455.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 55435450240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5404797 + ... + 5415043.

It is an arithmetic number, because the mean of its divisors is an integer number (1058362200).

Almost surely, 2^55435450240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55435450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67735180800).

55435450240 is an abundant number, since it is smaller than the sum of its proper divisors (80034911360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55435450240 is a wasteful number, since it uses less digits than its factorization.

55435450240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10452 (or 10440 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 55435450240 in words is "fifty-five billion, four hundred thirty-five million, four hundred fifty thousand, two hundred forty".